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artists were highly valued members of society
B) herman von helmholtz
The trichromatic color theory<span> began in the 18th century, when </span>Thomas Young<span> proposed that color vision was a result of three different </span>photoreceptor cells<span>. </span>Hermann von Helmholtz<span> later expanded on Young's ideas using color-matching experiments which showed that people with normal vision needed three wavelengths to create the normal range of colors. Physiological evidence for trichromatic theory was later given by </span>Gunnar Svaetichin<span> (1956).</span>
The focal point is important because a mistake in this focal point often creates a dull, uninteresting photograph. Almost anything can be a focal point if done right, including a stream, interesting tree, or rock formation. Use the rule of thirds to help you place the focal <span>point within the photograph. </span>
